Re: [leafnode-list] Can fetchnews un-buffer stdout?

[Andreas Ferber <aferber@xxxxxxxxxxxxxxxxxxxxxxxx>]

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On Sat, Jan 13, 2001 at 08:32:36PM +0100, Matthias Andree wrote:
>=20
> > /usr/local/sbin/fetchnews -vvv \
> > 1>>/var/spool/news/log/fetchnews.log 2>&1
> > redirects stdout to a non-terminal file, which disables line
> > buffering.
> Why should a shell redirection switch from line to full buffering?

Because glibc checks if stdout is connected to a tty and uses full
buffering if not.

Quoting from the glibc texinfo documentation:

|    Newly opened streams are normally fully buffered, with one
| exception: a stream connected to an interactive device such as a
| terminal is initially line buffered.

Andreas
--=20
Houston, Tranquillity Base here.  The Eagle has landed.
	-- Neil Armstrong

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